Wood-planing machine



(N0 Mudel.)

G. T. LAWRENCE & H. R. TILLISON. WOOD PLANING MAGHINB.

No. 566,082. Patented Aug. 18, 1896.

- To aZZ whom it may concern:

Be itknown that we, GEORGE T. LAWRENCE,

of New York, county of New York, State of New York, and HosEA'R.TILLISON, of Boston, county of Suffolk, State of Massachusetts, haveinvented an Improvement in WVood-Planing Machines,of which the foll0wingdescription, in connection with the ac- .companying drawings, is aspecification, like letters on the drawings representing like parts.

In planingmachines as at present constructed it is the common practiceto builda fixed bonnet over the upper cutter to catch the chips thrownofi by the cutter, said bonnet having an outlet connected with a pipe orspout leading to a distant point. henever it is necessary to reach thecutter-knives for adjustment, sharpening, or otherwise, the bonnet mustbe bodily removed, entailing much inconvenience and loss of time. Torender the cutter more accessible, this present invention comprehends aninclosing bonnet, preferably formed in a single casting and supported atone side on hinges to enable it to be quickly and easily turned back toexpose the cutter.

Figure 1 of the drawings represents in section a portion of a planing-machine, sufficient to enable our invention to be understood; Fig. 2,a perspective detail of the bonnet detached; and Fig. 3, adetail view,looking at the outside of the stand, showing one man ner of supportingthe cutter-bearings, chipbreaker, &c.

Referring to the drawings, A represents a bed or frame upon which, atopposite sides, are erected two like stands a, only one of which isherein shown, said stands constituting supports for the bearing-boxes b,in which is journaled the upper cutter B, all of which I are and may beof a construction common to machines of this class.

In the machine illustrated each bearingbox I) has pivoted to it at b acurved arm b reaching over the box and forked at its free end to form aguideway c for the reception of a projecting ear e on the end of thechip- UNITED STATES PATENT OFFICE.

GEORGE LAXVRENCE, OF NEW YORK, N. Y., AND HOSEA R. TILLISON,-OF

BOSTON, MASSACHUSETTS, ASSIGNORS TO THE S. A. FOODS MACHINE COMPANY, OFBOSTON, MASSACHUSETTS.

WOOD-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 566,082, dated August18, 1896.

Application filed. .Tune 2, 1894. Serial No. 513,276. (No model.)

breaker C, said chip-breaker being horizontally adjustable in saidguideway c, and held in adjusted position bya usual screw 0.

D is the inclosing bonnet, (shown by dotted lines, Fig. 1, in itsposition covering the upper cutter B and in full lines turned back toexpose the cutter,) said bonnet being preferably rectangular andsomewhat pyramidal in, shape, i. 6., having its sides or ends madeinclined, and provided with an outlet at at or near its top adapted tobe connected to a suitable pipe or spout (shown by dotted lines, Fig. 2)to convey the chips to a distant point.

The bonnet D, preferably cast in a single piece, as shown, is, inaccordance with this present invention, hinged at one side (herein shownits rear side) to a suitable support (shown as the chip-breaker C)provided for that purpose with upwardly-extended ears 0 to which arejointed at c the ears d on the rear of the bonnet. ing position of thebonnet is as shown by dotted lines, Fig. 1, and in full lines in Fig. 2,the chips thrown off by the upper cutter being directed by the inclinedsides or ends of the bonnet to and finding their exit through theoutlet-opening d. When it becomes necessary to reach the cutter-knives,the bonnet is turned on its hinges into the full-line position, Fig. 1,leaving the cutter fully exposed .and easily accessible. The bonnet inthe meantime is held by its hinges and must of necessity return to itscorrect adjusted position when the bonnet is turned down, as in Fig. 2.

No adjustment whatever is necessary for the bonnet when once properlyset, for any adjustment of the chip-breaker, which must take place withevery change in the cutterknives automatically through its hinges c d,carries the bonnet also into proper position.

So far as we know, we are the first to provide an inclosing bonnetrectangular in shape, 1'. 9., having four inclosing walls,'all of whichlead to a suitable outlet-opening, which bonnetis hinged to a suitablesupport, preferably a chip-breaker, as shown, whereby, when in itsnormal position, said bonnet cov- The ordinary workers and substantiallyincloses the upper cutter,and which,when necessary,may be turned back onits .hinges to expose said cutter.

Heretofore it has been necessary to send for a sheet-iron worker to rigup a fixed bonnet over the cutter after the machine has been set up inworking position; but with our improved bonnet nothing is necessary butto connect a simple pipe to the outlet d.

We claim 1. In a planing-machine, the combination with the upper cutter,of a chip-breaker adjustably mounted in bearings, said bearings beingpivoted eccentrically to the bearings of said cutter, and a bonnethinged to said chipbreaker having its hinge-axis parallel to the edge ofsaid chip-breaker and also to the axis of said cutter, whereby saidbonnet may be freely swung back on its hinges away fromv said cutter andwhereby adjustment of said chip-breaker correspondingly adjusts saidbonnet, substantially as described.

2. In a-planing-machine, the combination with the upper cutter, of achip-breaker adjustably mounted in bearings, said bearings being pivotedeccentrica-lly to the bearings of said cutter on the opposite side ofits journal from said chip-breaker, said chip-breaker being arranged forindependent adjustment at either end to and from said cutter inguideways provided therefor in said bearings, and a bonnet hinged tosaid chip-breaker having its hinge-axis parallel to the edge of saidchipbreaker and also to the axis of said cutter, whereby said bonnet maybe freely swung back on its hinges away from said cutter, and wherebyadjustment of said chip-breaker cor-- respondingly adjusts said bonnet,substan-' tially as described.

3. In a planing-machine, the combination with the upper cutter, of achip-breaker adjustably mounted in bearings, said bearings being pivotedeccentrically to the bearings of said cutter, on the opposite side ofits journal from said chip-breaker, and means for adjusting saidbearings about said pivots, said chip-breaker being arranged forindependent adjustment at either end to and from said cutter inguideways provided therefor in said bearings, and a bonnet hinged tosaid chipbreaker having its hinge-axis parallel to the edge of saidchip-breaker and also to the axis of said cutter, whereby said bonnetmay be freely swung back on its hinges away from said cutter and wherebyadjustment of said 1 ing arranged for independent adjustment at eitherend to and from said cutter in guide ways provided therefor in saidbearings,-and

a bonnet hinged to said chip-breaker at either end thereof having itshinge-axis parallel to the edge of said chip-breaker and also to theaxis of said cutter, whereby said bonnet may be freely swung back on itshinges away from said cutter and whereby adjustment of said chip-breakercorrespondingly adjusts said bonnet, substantially as described.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

GEORGE T. LANVRENOE. HOSEA R. TIIJLISON.

WVitnesses for G. T. Lawrence:

ROBERT A. PIPER, RIcHD. F. JoNEs.

Vitnesses for H. R. Tillison:

FREDERICK L. EMERY,

M. J. SHERIDAN.

